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are in critical condition. several people required amputations and doctors say more are likely. nbc news justice correspondent pete williams is standing by. i am just reading information that you put in regarding the components of this bomb and what authorities believe was used to make the explosives. what can you tell me? >> they say they were crudely made. that doesn't mean that they weren't powerful and they were. they were made with gunpowder, bbs and ball bearings packed inside a pressure cooker. let me point to a picture from a homeland security bulletin. we're going to get in real tight on these little pots down here. this is what pressure cookers look like. give it a second to focus and see how much tighter we can get. these are what pressure cookers look like in case you haven't seen them. these are rather inexpensive pressure cookers. in case you've not ever dealt with one. a pot with a cover on it that you can make basically air tight and food cooks faster. and then for at least a decade, they've been used to make bombs around the world. so inside is the explosive and the authorities
. sources tell nbc news that the triggering mechanism appears to have had a battery pack and circuit board, elements of a sophisticated system. both elements were recovered at the scene. joining me now is congressman ed markey from massachusetts. one of the people killed, krystle campbell is from your district? >> yes, she is. that is a good indication this goes beyond the city of boston. >> it does. >> this is all of massachusetts. there are tens of thousands of runners but there's a million people watching the marathon. as a result, every single family knows someone who was here yesterday. this is a very special day each year for the whole state. krystle campbell from medford is somebody that is part of the larger massachusetts family. they were all grieving. >> everywhere you go today, you see the faces of sadness. there's not a place where you can look where you don't see people who are feeling this. >> no. this is -- this is something that hit us just 12 years ago. >> the planes originated from here. >> they hijacked two planes with 150 people on those two planes that flew into the wo
Search Results 0 to 2 of about 3 (some duplicates have been removed)